The invention discloses a filter material capable of purifying indoor air and eliminating second-hand smoke. A slurry is synthesized from natural mineral sepiolite, attapulgite, tourmaline, rare-earth mineral, nanometer silica, a non-toxic adhesive and the like; and then the slurry is uniformly adhered in a PET (polyethylene terephthalate) fiber layer, and dried, shaped and folded to prepare the filter material with an unequal thickness of 15-60mm. Toxic and harmful materials and harmful sol materials obtained in indoor air after tobacco is combusted can be absorbed, filtered and catalyzed by the filter material provided by the invention. The filter material can release far infrared rays so as to excite the natural mineral tourmaline to permanently and stably release negative ions, wherein the concentration (more than 6000 / cm<3>) of the negative ions greatly exceeds the standard (1000-1500 / cm<3>) of indoor fresh air, confirmed by world health organization, therefore, the effects of sterilizing, removing toxicity and peculiar smell, eliminating the second-hand smoke, outputting clean air and thoroughly improving the indoor air pollution state are achieved.